Nondestructive up-conversion readout in Er/Yb co-doped Na0.5Bi2.5Nb2O9-based optical storage materials for optical data storage device applications

Zhang, Qiwei; Yue, Shuangshuang; Sun, Haiqin; Wang, Xusheng; Hao, Xihong; An, Shengli

doi:10.1039/c7tc00582b

Cited by 82 publications

(50 citation statements)

References 61 publications

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“…In our recently reported studies, we found that this strategy is also suitable to inorganic photochromic materials. High luminescent switching contrast can be obtained in Sm, Pr, Ho, or Eu‐doped Bi 2.5 Na 0.5 Nb 2 O 9 (NBN) materials . Nevertheless, these materials with down shifting luminescent mode generally exhibit severe destruction to the stored information induced by the luminescent excitation energy.…”

Section: Introductionmentioning

confidence: 99%

“…How to decrease or avoid the overlap between them is a critical step. Upconversion luminescent modulation based on photochromic reactions has been proved to effectively decrease the overlapped degree between the excitation wavelength (980 nm) and absorption spectrum, for example, Er/Yb‐doped Bi 2.5 Na 0.5 Nb 2 O 9 material . However, the upconversion readout capability of them is only 84% at 980 nm irradiation with a low pumping power (600 mW for 20 seconds).…”

Section: Introductionmentioning

confidence: 99%

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Reversible upconversion switching for Ho/Yb codoped (K,Na)NbO₃ ceramics with excellent luminescence readout capability

et al. 2018

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Luminescent readout capability for photochromic materials plays a critical role in 3D optical data storage applications, especially for inorganic photochromic materials in the solid‐state form. In our previous studies, we found that the luminescent readout capability can be improved using two or multiple‐photon excited luminescent mode (upconversion), which can effectively decrease the destruction degree of the excitation energies to the stored information during the luminescent “reading” process. However, the luminescent readout performance is unsatisfactory owing to the absence of nondestructive luminescence readout capability. Herein, we report a new solid‐state photochromic material with excellent upconversion readout capability: Ho3+/Yb3+ codoped (K,Na)NbO3. Upon 407 nm light irradiation, the luminescent switching contrast (ΔRt) is up to 78%. Particularly, the materials almost have no any re‐absorption to 980 nm light, exhibiting extremely low destruction to information recording points. The luminescent readout intensity retains 96% after constant 980 nm irradiation for 4 minutes at a high pumping power of 1W, which is superior to our previously reported results (Er/Yb codoped Bi2.5Na0.5Nb2O9 materials). This work would help to further develop new inorganic photochromic materials with high performance to satisfy the requirements for optical storage devices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reversible upconversion switching for Ho/Yb codoped (K,Na)NbO₃ ceramics with excellent luminescence readout capability

et al. 2018

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“…Nevertheless, these inorganic materials mentioned above hardly exhibit luminescent switching performance. Recently, our groups found that rare‐earth doped Bi 2.5 Na 0.5 Nb 2 O 9 materials possess excellent luminescent switching behavior . Furthermore, it is also necessary to search for new inorganic photochromic materials, and further improve their properties for practical device applications in optical data storage.…”

Section: Introductionmentioning

confidence: 99%

Reversible luminescence modulation of Ho‐doped K_0.5Na_0.5NbO₃ piezoelectrics with high luminescence contrast

et al. 2017

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A significant luminescence modulation behavior based on photochromic reactions was observed in Ho3+‐doped (Na0.52K0.48)0.92Li0.08NbO3 ceramics, fabricated by the conventional solid‐state reaction method. Under visible light irradiation (407 nm) for 20 second, the samples changed pale gray from initial pale green, and returned to their original color by a thermal stimulus of 230°C for 10 minutes, showing typical photochromic phenomenon. Under 453 nm excitation, the samples exhibited strong green emission at 551 nm. Interestingly, their green emission intensity can be effectively tailored by controlling photochromic reaction processes (irradiation wavelength and time), and the luminescent modulation ratio (ΔRt) reaches up to 77%. And, the ΔRt value has no any obvious degradation after 10 cycles by alternating visible light irradiation and thermal stimulus, showing excellent reversibility. These results make it potential applications in many fields as a kind of multifunctional material.

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“…This photochromic processes can be well reflected by measuring the change of luminescent intensity before and after sunlight irradiation. 40 Figure 10 shows the DS and UC luminescence spectral changes with sunlight irradiation (30 seconds of irradiation time). After sunlight irradiation, the emission intensity decreases significantly, while the shapes and patterns of emission peaks have no obvious change ( Figure 10A,C,E).…”

Section: Resultsmentioning

confidence: 99%

Optical temperature sensing and luminescent switching properties in Pr/Er‐doped (K_0.5Na_0.5)NbO₃ materials

Zhu

Guo

et al. 2020

J Am Ceram Soc

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For optical temperature sensing materials, the emission and excitation bands are extremely critical to measure the temperature by fluorescence intensity ratio (FIR) technique. Singly Ln‐doped optical temperature sensing materials exhibit very few emission bands, which greatly constraints their practical applications of FIR technique. Here, the fabricated Pr/Er co‐doped (K0.5Na0.5)NbO3 materials exhibited multi‐color (red‐green) and dual‐mode (downshifting/upconversion) luminescence properties. The temperature sensitivity can be effectively tuned by choosing different emission or excitation bands. The optimized optical temperature sensitivity reached up to 0.0094 K−1, much higher than that of most temperature sensing materials. Besides, the samples also showed excellent luminescence modulation properties based on the photochromic reaction. Under sunlight irradiation, the luminescent switching contrast (ΔRt) of the samples reached more than 60%. These results may provide a guiding role in designing and modulating optical temperature sensing properties for multifunctional materials.

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Nondestructive up-conversion readout in Er/Yb co-doped Na_0.5Bi_2.5Nb₂O₉-based optical storage materials for optical data storage device applications

Abstract: Er/Yb co-doped NBN photochromics exhibit excellent luminescence readout capability by using a two-photon absorption mode with extremely low destruction on information recording.

Cited by 82 publications

References 61 publications

Reversible upconversion switching for Ho/Yb codoped (K,Na)NbO₃ ceramics with excellent luminescence readout capability

Reversible upconversion switching for Ho/Yb codoped (K,Na)NbO₃ ceramics with excellent luminescence readout capability

Reversible luminescence modulation of Ho‐doped K_0.5Na_0.5NbO₃ piezoelectrics with high luminescence contrast

Optical temperature sensing and luminescent switching properties in Pr/Er‐doped (K_0.5Na_0.5)NbO₃ materials

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Nondestructive up-conversion readout in Er/Yb co-doped Na0.5Bi2.5Nb2O9-based optical storage materials for optical data storage device applications

Abstract: Er/Yb co-doped NBN photochromics exhibit excellent luminescence readout capability by using a two-photon absorption mode with extremely low destruction on information recording.

Cited by 82 publications

References 61 publications

Reversible upconversion switching for Ho/Yb codoped (K,Na)NbO3 ceramics with excellent luminescence readout capability

Reversible upconversion switching for Ho/Yb codoped (K,Na)NbO3 ceramics with excellent luminescence readout capability

Reversible luminescence modulation of Ho‐doped K0.5Na0.5NbO3 piezoelectrics with high luminescence contrast

Optical temperature sensing and luminescent switching properties in Pr/Er‐doped (K0.5Na0.5)NbO3 materials

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Nondestructive up-conversion readout in Er/Yb co-doped Na_0.5Bi_2.5Nb₂O₉-based optical storage materials for optical data storage device applications

Reversible upconversion switching for Ho/Yb codoped (K,Na)NbO₃ ceramics with excellent luminescence readout capability

Reversible upconversion switching for Ho/Yb codoped (K,Na)NbO₃ ceramics with excellent luminescence readout capability

Reversible luminescence modulation of Ho‐doped K_0.5Na_0.5NbO₃ piezoelectrics with high luminescence contrast

Optical temperature sensing and luminescent switching properties in Pr/Er‐doped (K_0.5Na_0.5)NbO₃ materials